PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2321Nut,plain,hexagon

Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron · NSN 5310-00-050-0458 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-050-0458 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-050-0458. Primary manufacturer part number: 2321.
Features
  • Nut,plain,hexagon — FSC 5310
  • Nut Style: HEXAGON
  • Nut Height: 0.375 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Nominal Thread Size: 0.138 INCHES IN
  • Bearing Surface Type: FLAT
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-050-0458, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-050-0458
Primary Part Number2321
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHalsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
StatusACTIVE
Nut StyleHEXAGON
Nut Height0.375 INCHES NOMINAL IN
Thread Quantity Per Inch32
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Size0.138 INCHES IN
Bearing Surface TypeFLAT
Thread DirectionRIGHT-HAND
Surface TreatmentCADMIUM OVERALL
MaterialCOPPER ALLOY OVERALL
Thread Class2B
Width Across Flats0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-099-53607135276P1 INTERCHANGEABLE
Nut,sleeve
Lockheed Martin Corporation Div Rms
5330-00-300-62152321 INTERCHANGEABLE
Gasket
Clayton Manufacturing Company
5915-00-311-86512321 INTERCHANGEABLE
Filter,band Pass
Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions
5995-00-379-442723-21 INTERCHANGEABLE
Cable Assembly,power,electrical
Bae Systems Information and Electronic Systems Integration Inc.
5310-00-382-88592321 INTERCHANGEABLE
Washer
Clark Material Handling Company
5330-00-429-34862321 INTERCHANGEABLE
Gasket
Velan Valve Corp.
5365-00-522-88482321 INTERCHANGEABLE
Bushing,nonmetallic
The Boeing Company
5940-00-552-4026602355 INTERCHANGEABLE
Splice,conductor
Clark Material Handling Company
5935-00-572-61082321 INTERCHANGEABLE
Connector,receptacle,electrical
Cole Hersee Company
6145-00-729-9648 INTERCHANGEABLE
Braid,wire
Cross-Reference Index
Part NumberManufacturer
7135276P001 Lockheed Martin Corporation Div Rms (USA)
2321 PRIMARY Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
2321 Dialight Corporation (USA)
1551D11 Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect (USA)
B1575-3/8-11 Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect (USA)
Related Parts
5310-00-099-5360INTERCHANGEABLE
NUT,SLEEVE
7135276P1
5330-00-300-6215INTERCHANGEABLE
GASKET
2321
5915-00-311-8651INTERCHANGEABLE
FILTER,BAND PASS
2321
5995-00-379-4427INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
23-21
5310-00-382-8859INTERCHANGEABLE
WASHER
2321
5330-00-429-3486INTERCHANGEABLE
GASKET
2321
5365-00-522-8848INTERCHANGEABLE
BUSHING,NONMETALLIC
2321
5940-00-552-4026INTERCHANGEABLE
SPLICE,CONDUCTOR
602355
5935-00-572-6108INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2321
6145-00-729-9648INTERCHANGEABLE
BRAID,WIRE
5935-01-043-3473INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2321
5975-01-066-6492INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
TC-723

Frequently Asked Questions

What is NSN 5310-00-050-0458?

NSN 5310-00-050-0458 is a Nut,plain,hexagon, manufactured by Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-050-0458?

NSN 5310-00-050-0458 has 5 cross-referenced part numbers: 7135276P001 (Lockheed Martin Corporation Div Rms), 2321 (Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron), 2321 (Dialight Corporation), 1551D11 (Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect), B1575-3/8-11 (Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect).

What NSN replaces 5310-00-050-0458?

There are 12 known substitutes for 5310-00-050-0458: 5310-00-099-5360, 5330-00-300-6215, 5915-00-311-8651 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2321?

Key specifications for 2321: Nut Style: HEXAGON; Nut Height: 0.375 INCHES NOMINAL IN; Thread Quantity Per Inch: 32; Thread Series: UNIFIED NATIONAL COARSE (UNC). 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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